The head of the fly contains the eyes, antennae and mouthparts. The common housefly liquefies food with its saliva before the mouthparts are used in a sponging, mopping capacity. The antennae provide flies with their primary source of smell and often are different between males and females. The housefly's compound eyes are some of the most complex of the insect world, allowing them to see a significant radius around their body. This makes flies difficult to surprise or swat. Show Flies have a pair of fully developed wings on the thorax, and a knobby, vestigial second pair of wings, called halteres, that are used primarily for balance. The fly's six legs also connect to the thorax and are made of five segments. The housefly has a hard exoskeleton that protects it from moisture loss. Houseflies use the hairs on their bodies to taste and to smell. Biting Flies Flies and Dogs Identify Flies Removal of Flies From Pets  Fig. 1 - Leg of a muscoid fly (Brachycera: Schizophora). The legs of insects are appendages consisting of three pairs, one for each thoracic segment. The forelegs are called also prothoracic, the midlegs mesothoracic, and the hindlegs metathoracic. These pairs can sharply differ in morphology, specially in relation to particular functions performed, while the metameric structure remains unchanged. In proximal-distal order, each leg consists of following segments: coxa, trochanter, femur, tibia, tarsus, and acropod. In turn, the tarsus is composed of several articles called tarsomeres. The presence and the position of morphological details of the integument are important in taxonomic diagnosis, so the surface is divided into four faces (McAlpine, 1981): the anterior and posterior faces are ideally perpendicular to he median sagittal plane, the dorsal and ventral faces are parallel, outside or lateral the first one, internal or medial the second one. Other transitional surfaces are added to these as following: anterodorsal, anteroventral, posterodorsal, and posteroventral. About the structure and function, the legs of Diptera are ambulatory or cursorial, with specializations, in some groups, which may involve a single pair, usually the prothoracic. The most significant adaptation is related to raptorial function, recurrent in some families or groups at lower rank including predatory species. Another specialization occurs in the males of some groups which use the legs to hold the female during the mating; in this cases, the modifications, usually of tarsi, are a secondary sexual feature. »» Top of page CoxaThe coxa is the proximal segment of the leg, usually short and stout, but in some groups it is greatly elongated in all legs (Mycetophiliformia]] in part) or in the forelegs only (Empididae). Each coxa connects proximally to the lateroventral region of thorax by two joints: the dorsal one is a process of the pleuron (coxifer), the ventral is the prosternum (forecoxa) or the furcasternum (mid- and hindcoxa). The midcoxa is divided into two parts, the anterior one is called eucoxa, the posterior meron. The meron is strongly flattened and becomes a ventral sclerite of the mesopleuron, placed under the epimeron. The eucoxa divides further into two segments, called basicosta and disticoxa. »» Top of page TrochanterThe trochanter is a short segment joint to the femur and articulated to the coxa. Usually it does not show significant features from the taxonomic point of view. »» Top of page FemurWith the tibia, the femur is the largest segment of the leg and appears elongated and more or less enlarged. Usually there are integumental appendages as bristles or setulae, spines, processes, whose number and position are treated in taxonomic diagnosis. Specific adaptations in the form, development, and integumental arms occur in the fore fomera of certain groups with adult predators, where they are transformed in raptorial legs. Other adaptations occur in males of various groups, that use the fore legs to grap the female during the mating. Finally, in some groups there are structures used to emit sounds. »» Top of page TibiaThe tibia is the second largest segment, usually more slender of the femur and more or less elongated. Like the femur, in the tibia there are integumental appendages of taxonomic interest related to specific functions. The taxonomic descriptions refer widely to the presence and features of setulae and bristles near the distal end. »» Top of page TarsusThe tarsus consists of several segments, called tarsomeres, and joins the distal end of the tibia. In the ground-plan there are five tarsomeres, with the proximal (basitarsus or metatarsus) is longer than the other distal. Only a few groups of Diptera have less than five tarsomeres. The males of some groups may have specific adaptation of the basitarsus as a secondary sexual character. »» Top of page AcropodThe acropod is the distal segment of the leg. It is structurally distinct from the tarsus but is morphologically associated and closed to fifth tarsomere. Due the distal position, the term pretarsus is not appropriate, whereas acropod or posttarsus are names more correct (McAlpine, 1981, Tremblay, 1982). The name "pretarsus" is still widely used in literature. The structure and conformation vary throughout the order and are closely related to the functionality of the leg, because they are finalized to facilitate the movement or the standing on various surfaces. It is structurally articulated to fifth tarsomere by three sclerites: one unpaired and median, called unguitractor, and two lateral and symmetrical, called basipulvilli. These plates bear three organs usually present in most of flies and, more generally, of insects: pulvilli, claws, and empodium. The pulvilli are two membranous lobes, more or less e expanded, and are connected to the basipulvilli. Instead, the claws are two processes more or less bent and connected by a membranous base to the unguitractor. The distal end of unguitractor bear a more or less membranous lobe, called arolium, which may extend with a median process called empodium. The empodium, not even present, is usually setaceous or, in primitive groups, lobe-shaped. »» Top of page Bibliography
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»» Top of page What type of legs does a fly have?The legs of insects are appendages consisting of three pairs, one for each thoracic segment. The forelegs are called also prothoracic, the midlegs mesothoracic, and the hindlegs metathoracic.
How legs do flies have?How many legs does a fly have? A fly has six legs when it is an adult, but no legs when it is a larva.
What are flies feet called?Each fly foot has two fat footpads that give the insect plenty of surface area with which to cling. The adhesive pads on the feet, called pulvilli, come equipped with tiny hairs that have spatula-like tips. These hairs are called setae.
What kind of wings do flies have?Wings. Adult flies have only one pair of wings, on the mesothorax or second thoracic segment. The hind wings, modified into halteres, have a stalk and a knob, or club, that may be large and heavy relative to the size of the fly. The halteres vibrate up and down in time with the wings and act as gyroscopes in flight.
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What kind of legs do flies have?
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